In case the trade space (Dragon MAV) needs to utilize a smaller volume MAV or MCT and requires a higher density fuel over just Methane alone

The Dragon MAV idea, for example, posits an MAV launching from inside the Dragon, reducing the volume somewhat might help.Propylene or Ethylene gelled in cryogenic Methane in the first stage of a two-stage Mav needs to be modeled for efficiency and practicality of production as an ISRU process.